com·mit·ted; com·mit·ting
1 a: to put into charge or trust : entrust b: to place in a prison or mental institution c: to consign or record for preservation <commit it to memory> d: to put into a place for disposal or safekeeping
2: to carry into action deliberately : perpetrate <commit a crime>
3 a: obligate, bind

If you are committed to correct spelling, you will remember that this word doubles its final t from "commit" to "committed."